Khandogya-Upanishad: Seventh Prapathaka, Twenty-Fifth Khanda
1. “The Infinite indeed is below, above, behind, before, right and left—it is indeed all this.
“Now follows the explanation of the Infinite as the I: I am below, I am above, I am behind, before, right and left—I am all this.
2. “Next follows the explanation of the Infinite as the Self: Self is below, above, behind, before, right and left—Self is all this.
“He who sees, perceives, and understands this, loves the Self, delights in the Self, revels in the Self, rejoices in the Self—he becomes a Svarag, (an autocrat or self-ruler); he is lord and master in all the worlds.
“But those who think differently from this, live in perishable worlds, and have other beings for their rulers.